Green LongLife 5050157 LED Replacement Light Bulb 42mm Festoon 211 base 75 Lumens 12v Natural White (2 per pkg) 100,000 hours life expectancy 11-15 volts DC including 12v; this voltage range is designed to withstand RV power fluctuations LED Replacement light bulb for bulbs with 42mm Festoon 211 base Low heat, safe to touch, and instantly bright Energy efficient and eco-friendly